Why isn't the temp conversion working for me

Question

I just finished the web development fundamentals course and the last part didn't work for me. I've tried using it on replit, saving the files on my PC and opening them from there, and using a different browser.

EDIT: I feel so dumb. I forgot to reference the JS and CSS in the HTML

HTML:
<form>
<label for="celsius"> Celsius: </label>
<input type="number" id="celsius" value="0">
<br><br>
<label for="fahr">Fahrenheit</label>
<input type="number" id="fahr" value="32">
</form>

JS:
window.onload = function(){
let c = document.getElementById("celsius");
let f = document.getElementById("fahr");
c.oninput = function(){
f.value = (c.value * 9/5) + 32;
};
f.oninput = function(){
c.value = (f.value -32) * 5/9;
};
};

Answer 1

It's working.. check again.
Save in playground and share link here...
Are you mean wrong output?

Answer 2

No, when I load it from replit or open the HTML file it doesn't change, I can set C to 40 and F will remain at 32

Answer 3

Iam getting 104F on 40C
without any changes...